Apparatus for and method of forming and handling sheet bars and the like



May 12, 1925. 1,537,092 v w. J. STOOP APPARATUS FOR AND METHOD OFFORMING AND HANDLING SHE-ET BARS AND THE LIKE Filed ec. 13, 1922 [2 Guami .Piiteiited May 12, 19 25 ar rarwrcs FOR m METHOD or romumc AND HLIKE. a

ANDLING SHEET BARS AND Application filed December 13, 1922. Serial No.606,598.

To all whom it may concern;

Beit known that I, WILLIAM J. S'roor, a citizen of the United States ofAmerica, and resident of NVheeli'ng, county of Ohio, 5 and State of WestVirginia, have invented certain new and useful Improvements in Apparatusfor and Methods of Forming and Handling Sheet Bars and the like, ofwhich the following is a specification.

This invention relates broadly to a sheetbar rolling and handlingsystem, and more specifically to an apparatus for and asys tern ormethod of rolling, treating and handling sheet bars. v I

It'has been the general and practically universal practice heretofore topile sheet bars in stacks immediately following the rolling thereof andWhile said bars are still heated to a .very high temperature. Such 20stacking, commonly termed hot piling,

invariably results in a reduction of the carbon content of the barsandfrequently results incomplete decarbonizationlof the surfaces of thebars, and, further, results-in enlarging or coarsening the surface grainof the metal. In such hot piling the carbon is furnished oxygen by thescale on the surface of the bar, and this scale is reduced to a loweroxide of such harder nature that it is caused to cling or adhere veryclosely to the surface, with the re-,

sult that it bakes on the bar instead of cracking off. This condition ofthe bar, instead of being improved in reheating, is aggravated, eachsubsequent heating actlng to enlarge or coarsen the grain, the barsbeing rarely heated to grain-reconstruction temperature in suchreheating, or even in box annealing. Additionally, the bar showsanimperfect surface finish due to the hot rollin strains; Sheets rolledfrom such hot-pi ed bars accordingly retain scale pittings and othersurface inequalities and imperfections of thebars, rendering theirsurfaces rough and extremely difficult to polish, and also requiring anexcessive amount of tin and spelter coating for the production of tinplate and galvanized sheets.

By my present invention the bars are handled and treated in such mannerthat the quality of the metal is improved, much of the scale is removedfrom the bars, and the reduction of the carbon 'in the surfaces of thebars is very largely prevented, resulting in said bars possessingrelatively smooth and fine grained surfaces- When ably adapted ,for deepdrawing purposes that is, for use in the manufacture of hol- .low sheetmetal ware or articles produced by deep drawing processes. They possessa dense, smooth and practically erfect sur face finish, and are capableof eingreadily polished and also being smoothly coated in tinning orgalvanizing with a marked saving in the quantity of the'coating materialemployed. Further, the sheets have fine grain structure,- do notindicate surface decarbonization and do not'possess the usual oxideenclosures.

Thus,it is the primary object of this invention to provide, inassociation with a barmill, aseries ofmechanisms arranged ins-suchrelation that-the sheet bars from said mill are individually handled toeffect prompt cooling thereof without coming into direct contact onewith the other. a

A further object is to provide a mill for rolling sheet bars havingassociated .therewith a bar-cooling bed and intermediate V automaticmechanisms whereby, in a continuous-series of operations occurring in'proper "sequence, the metal emerging from the delivery roll of the millis sheared into bar lengths and said lengths are individually handled toeflect boshin'g, air cooling and final piling thereof. A still furtherobject is to provide apparatus whereby sheet bars are produced andhandled in an expeditious and wholly automatic manner from-the timetheyare rollecluntil piled in orderly form andin fully cooled conditionat a point remote from the rolling point. i

In describing the invention in detail, reference is herein had to theaccompanying drawings, in which Figure 1 is a diagrammatic view of myinvention, illustrating the preferred relative arrangement of theindividual mechanisms;

Figure 2 is a partial diagrammatic, view showing the bosh and flyingshear occupying relative positions the reverse of thoseshown in Fig. 1;r

Figure 3 is a view similar to Fig. 1 with .intothe coldwater of thebosh. v which is preferably of the form disclosed in my co-pendingapplication for patent,-

(r the cooling bed omitted; and Figure 5 is a View similar to Fig. 2showmg the cooling bed omitted.

Referring to said drawings, 1 indicates the final, or delivery's'et', ofrolls of a mill employed in the rolling of sheet bars, said set beingpreferably"thefinal set ofa mill of continuous type, generallydesignated in F ig. 1- by the reference character -A. Emerging from saidrolls 1 at high speed, the long strip of reduced metal passes fromthe'mill to a set of pinch rolls 2 locatedin' the line of its travel. Inthe arrangement which is at present preferred, said pinch rolls 2 arelocated between a flying shear 3 and a boshing tank 4, said shear beingpreferably located adjacent to said rolls 1, and the bosh at theopposite side of said pinch rolls, as shown in Figs. 1 and4,' but therelative positions of the shear and the bosh may be reversed, as shownin Figs. 2 and 5. Said flying shear actstocut or shear the advancingreduced ingot into bar lengths without interferring with or retardingthe advance movement of the metal, and

whether said shear occupies the position relative to the bosh shown inFigs. 1 and l, or that shown in Figs. 2 and 5, the metal, traveling athigh speed and at the final barrolling temperature, is promptly plungedSaid bosh,

Serial No. 560,587, is made of such short length that the metal issubmerged therein but momentarily, the purpose being to effect a sudden,but not too great, reduction in the temperature of the bars. Morespecifically stated, it is designed that the temperature of the barsshall be reduced to a substantial extent by water cooling while saidbars are still in rapid motion. Such partial reduc tioiwof temperaturemay be elfected without undue distortionof the bars, whereas suchdistortion wouldv occur were the bars-to remain submerged in the boshuntil fully cooled. In this sudden initial cooling and the rapid forwardtravel of the bar through the bosh, much of the scale carried by thebars is removed.

In the'arrangement shown'in Fig. 1 ','the.

forward to a set of pinch 'rolls 7, whence I they are advanced to a barpiler 8 which may be of any approved type.

The conveyors of he ,cooling bed,. even when advanced at maximum speed,transport the partially cooled sheet bars deliveredthereto so slowlythat, when the bar piler is reached, the heat thereof is dissipated inthe air to the extent that no alteration in the physical character ofthe surfaces-of the. bars due to the remaining heat can occur followingpiling of the bars.

'In the modification shown' in Fig. 3, in

which the bosh is omitted, it is designed that cooling of'the bars shallbe Wholly acfiOglPllShQd in the travel of the. air-cooling In Fig. 4. aplurality of alined boshing tanks into which the bars are successivelyplunged are employed, and the air coolingbed is omitted, the bars beingpassed directlyfrom the final bosh 4, tothe bar piler 8.

In Fig. 5 the shear is located for shearingthe bars following bashing,and the bars are thence passed directly to .the bar piler, the aircooling bed being omitted.

-While any of the combinations disclosed, and with the elements arrangedas, in Figs 8, 4 and 5 may be employed, and each is productive of.improved results as compared with the prevailing practice of hotpiling, it is at present considered that the best results are obtainablethrough the combined fuseof bosh cooling and air cooling attained a millfor reducing the metal, of a flying shear located for shearing thereduced metal into bar form as it advances from said mill, a boshingtank located in alinement with the path of travel of the bars, means foradvancing said bars through said tank, a bar piler, and means foradvancing the boshed bars to said bar piler."

2. In a continuous sheet-bar forming and handling apparatus, thecombination with a mill for reducing the metal, of a flying shearlocated for shearing the reduced metal into bar form as it advances fromsaid mill, a boshing tank located in alinement with the path of travelof the bars, means for advancing said bars through said tank, a barpiler, and an air cooling bed intermediate said boshing tank and saidbar piler, said cooling bed embodying means by which the bars areadvanced.

3. In acontinuous'sheet-bar forming and handling apparatus, thecombination with a mill for reducing the, metal, of a flying (a) saidbar piler,

shear located for shearing the reduced metal intobar form as it advancesfrom said mill,

a bar piler, means intermediate the shears and said bar pilerforesuccessively cooling said bars in their travel to S'Elldlbjll piler,

said means including devices for sucees sively andseparately advancingsaid bars said bars 'to said coolingr'means.

, 4.j" I n a.conti nuous sheet-barformi'ngfand" hand-1mg apparatus, thecombination witha mill for'redueing themetal, of a flying shear locatedfor shearing the reduced metal into bar form as it advances from saidmill, a

bar piler, a cooling bedembodying advanc-- ing carrying devices, meansfor advancing the bars following shearing and for delivering the same tosaid bed, and means for-advancing said bars from said bed to said I barpiler. v

I 5. In a continuous .sheet-barforming and handling apparatus, thecombination with.

a continuous bar mill, of a boshing tank located adjacent to said milland through which the reduced metal is directed 1 in its travel fromsaid mill, a flying shear whereby said reduced metal is sheared into banlengths, a1r-coolmg means for said =bars,. means for deliver ng thesheared bars to said air-cooling means, a bar piler, and means foradvancing said bars from said air-cooling means to said'bar piler.

6. In a continuous sheet-bar forming and handling apparatus, thecombination with a continuous bar mill,of a boshing tank locatedadjacent to said mill and through which the reduced metal is directed inits travel from said mill, a flying shear whereby said reduced metal issheared into-bar lengths, a bar piler, and means for advancing thesheared bars to said bar piler.

7. A continuousbar forming'and handling apparatus, comprising a bar millfor reducing the metal to bar section, shears for cutting the barsection to bar lengths while in motion, conveyors for efi'ectmg coolingof such bars while in motion, and means forpiling said bars.

8. The method of producing and auto-. matically handling sheet bars,which consists in rolling the metal into bar form, pass-v ing thereduced metal through a boshing tank, shearing said metal into barlengths,

delivering said bars to transporting devices, advancing said bans onsaid dev ces, and

finally piling the .cooled bars.

9. The method of producing and auto'--' matically handling sheet bars,which connd means for delivering sists incutting-the metal intobarlen'gths as it passes from thereducing rolls, passing the' barsindividually through a bashing tank, delivering said-bars totransporting devices, advancing said bars on said devices for separatelyair-cooling the same, and

finally piling the cooled bars.

10. The method of producing and automatically handling sheet bars, whichconsists in successively rolling the metal into ba'r form, shearing saidmetal into bar lengths as it passes trom the reducmg roll, pass11ig-thembars individuallythrough a bo shing tank, and then subjecting saidbars individually to further cooling by air.

11.-The method of producing and auto- -matically handling sheet bars,which consists in successively rolling the metal into bar form, shearingsaid metal into bar lengths as it passes fromvthe reducing rolls,

and then passing the 'bars individually ,metalinto bar lengths, passingthe bars through a boshing tank to effect a reduction of temperature,and then advancing the bars from said tank for effecting furtherreduction of temperature by air cooling. 14. A continuous bar formingand handling apparatus comprising a bar mill for reducing the metal .tobar section, shears for cutting the bar section to bar lengths, andmeans for momentarily submerging said bars in a cooling bath. a I

15. A continuous bar forming 'and handling apparatus, comprising a barmill for reducing the metal to bar section, shears for cutting the barsection-to bar lengths, and a boshing tank through which the bars areseparately advanced for effecting partial cooling of the latter throughimmersion in a cooling liquid.

In testimony whereof I affix my signature in presence of two subscribingwit- 'nesses.

Witnesses z a ILLIAM J. STOOP.

'- -MART1N Mime, I

E. DUNLAP.

